Working with open unsealed radioactive material can lead to contamination of persons, equipment and surfaces. Therefore, regular controls are mandatory to ensure the safety of humans and the environment. Mobile contamination monitors such as the CoMo-170 or CoMo-300 are used for direct and indirect contamination measurements. Combined with dedicated accessories, these powerful measuring devices provide a complete solution for contamination control and clearance measurements.

Benefits• No gas-filled or gas-flushed detector• 2 in 1 instrument: α- and β-/γ-contamination measurement withonly one detector, no detector changerequired

• Large detector surface allows fast andeffective monitoring

• Combination of robust design andhigh efficiency

• Very light device with ergonomichousing design allows one handoperation

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Background measurement and subtraction User-friendly menu structure operated by just 5 function keys

• Various accessories

Key Figures

� detector size

� total weight

� versions available

170 cm2

800g

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CoMo-170/-300 Portable contamination monitorfor highly sensitive measurements of α- and β-/γ-contamination

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SPECIFICATION SHEET

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OptionsWipe test stationThe wipe test station is used to measure wipe samples of various sizes (60, 120 mm, screening filters). A wipe test factor can be taken into account.

Wall stationThe wall station allows you to reliably check hands without picking up the monitor. With power supply for charging the CoMo’s NiMH-batteries.

Floor trolleys for up to 3 CoMoFloor trolleys for 1 - 3 CoMo systems are available to monitor large floor areas. This makes it easy to carry out indoor or outdoor measurements.

A selection of special, external detectors expands the field of application of our contamination monitors:Dose rate probesThe external dose rate probes turn the mobile contamination monitor into a flexible dose rate meter.Pipe detectorDesigned for complete monitoring of pipes. The pipe detectors can measure α- and β/γ- contamination. Guiding elements and optional collars ensure the detector being centralized within the pipe.

Pancake contamination probeThe pancake contamination probe has the ideal size for finding hot spots or checking the interior of respirators.Flat detectorAreas that are inaccessible due to the housing height of the CoMo 170 can be easily monitored using the flat detector. Its robust design makes it very versatile. Lantern detectorThe lantern detector with its 4 detector surfaces can be used to monitor storage chutes for contamination, for example, in fuel element transport containers.

Corner detectorWhen carrying out clearance measurements, especially during the decommissioning of nuclear facilities, the detector can be used for the measurement of corners.Our corner detector has no dead zone at the edge. This type of detector has also proved itself for clearance monitoring of corrugated sheets, e.g. of ISO-containers.

Options

Product applications• Nuclear technology• Clearance measurements• Research centers• Nuclear medicine• Civil protection• Industry

CoMo 170 DL with integrated dose rate measurement

CoMo-170/-300 Portable contamination monitor

for highly sensitive measurements of α- and β-/γ-contamination

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Product specifications

Detector type:• Thin-layer plastic scintillation detector with ZnS coating, two aluminium vaporised Mylar foils (2 µm each), a fine-mesh honeycomb grid and a protective cover

• Alpha- and beta-/gamma-separation via count height analysis

Detector size:• CoMo-170: 170 cm²• CoMo-300: 300 cm²Detector unit:• Autonomous, easily exchangeable assembly, integrated in the bottom of the overall housing

Background:• CoMo-170: α approx. 0.1 cps, β/γ approx. 15 - 20 cps

• CoMo-300: α approx. 0.1 cps, β/γ approx. 20 - 30 cps

Background subtraction:• Automatic background measurement and subtraction, background measuring time programmable

• Option of net or gross measurementMeasuring electronics:• Microcontroller-based electronicsKeyboard:• Foil keyboard with 5 function keysAlarm:• Individually configurable for each type of measurement

• Visual warning• Acoustic warning (approx. 80 dB at a distance of 30 cm)

• Optional vibration alarm• Earphones can be connected for audible feedback in noisy or sensitive environments

Nuclides:• Preset calibration ex works• Settings and calibrations adjustable by user• Auto-calibration function• Library for up to 25 nuclides

Measuring time:• Continuously in search mode or with user-configurable measuring time

LC display:• Large-area graphic LC display (128 x 64 pixel)

• Automatic illumination via photocell (LDR) or adjustable fixed duration

Power supply:• 2 batteries (AA battery LR 6) or rechargeable batteries (NiMH),

• Approx. 25 h operating time• Can be recharged via charger or wall stationNominal operating range:• -10 °C to +40 °C (special version down to -20°C)

• up to approx. 90 % RF (non-condensing)• IP 54Dimensions:• CoMo-170: 280 x 125 x 135 mm (L (with handle) x W x H)

• CoMo-300: 318 x 157 x 172 mm (L (with handle) x W x H)

Weight:• CoMo-170: approx. 800 g (including batteries)

• CoMo-300: approx. 1,000 g (including batteries)

Housing:• Ergonomically shaped plastic housingInterfaces:• USB interface (for connection with PC), battery charge/mains operation, external detectors, active wall station/wipe test station

Special versions:• CoMo-170 DL: with additional GM counter tube integrated into the front for measurement of the dose rate

• CoMo-170/-300 G: with a thicker plastic scintillation detector for pure gamma measurements

Supporting your energyinstruments@nuviatech.com nuviatech-instruments.com

CoMo-170/-300 Portable contamination monitor

for highly sensitive measurements of α- and β-/γ-contamination

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CoMo Software

CoMo ParameterSoftware for parameter setting of the CoMo-system

CoMo DataSoftware for read-out and further processing of stored measuring data

CoMo LoggerSoftware for direct display of measuring values on a PC incl. alarm monitoring

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Radionuclide efficiency ( according to surface emission rate (ISO 7503-1)

Average values from measurements with 100 cm² sources)

Radionuclide efficiency ( according to activity (DIN 25482)

Average values from measurements with 100 cm² sources)

C-14 40% C-14 15%Cl-36 63% Cl-36 40%Co-60 62% Co-60 31%Cs-137 67% Cs-137 41%Sr-90 73% Sr-90 95%

Am-241 α 56% Am-241 α 26%Pu-238 α 42% Pu-238 α 20%U-238 α 45% U-238 α 41%

CoMo-170/-300 Portable contamination monitor

for highly sensitive measurements of α- and β-/γ-contamination

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